Albert Einstein also made two separate appearances in the Star Trek franchise, but unlike Newton he stuck with The Next Generation. He first appeared in the fourth season fluff piece The Nth Degree, where Barclay is given superhuman knowledge by an alien probe. Geordi walks in on a Holodeck simulation to find the usually shy and quirky Barclay arguing grand unification theories with Einstein himself (no I have no idea what that is, but apparently Geordi does and that's enough for me), which raises the last red flag that Barclay may have fallen under some sort of strange influence from the probe's attack on the Enterprise. Einstein's second appearance also came in the form of a Holodeck simulation, and also at the infamous poker table with Data, cracking jokes with the other facades about space time, prodding Sir Isaac about the apple story and calling a bluff on the winner of the game (whom we'll get to next)... and losing.